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How do i light the pilot light on Williams P321638 gas wall heater?

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  • mbogue778 Aug 30, 2010

    just moved into a place with a wall gas heater - Williams P321638 - and by mistake turned the knob all the way to "off". It was working fine and I just didn't pay attention, thinking I was turning it to "pilot" but instead I turned it off. Instructions say to light the pilot manually, but I'm not quite sure where the pilot burner is or what it looks like. I see something that looks like it could be the burner, behind the big shield. If I don't hear anything like gas coming on when I turn the knob to "pilot" - should I just keep holding a lighter flame to it? Does it take a while for the gas to reach the burner after it has been off for a few weeks>



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Look at the burners,there will be a pilot.It should be in the front of the burners,in the middle or at one end.Find it first.It will be a small hollow tube.This pilot does not put out a big flame,so don`t worry about it gusshing a flame will want to be ready with a match or a long lighter.A short lighter will do.Turn the knob to pilot.Push down on the knob,and light the pilot at the same time.Now when you do this,hold the knob down,and don`t let off the knob.The thermocouple has to heat up and sense the flame.And it will take about 30 seconds or so.When the time comes to release the knob,do it slow,and watch the flame,if it tries to go out,push it back down for about 20 more seconds.If it will not stay lit,you will have to make sure the thermocouple is touching the flame.The thermocouple has to be in the flame good to heat up.A small steel,or cooper tubing cut off,short,maybe 1/2 inch,can be dropped over the thermocouple to make the flame touch it,and accomplish this task.If the pilot will not light when you push down on the knob,then bleed the air out of the gas line,by holding the knob down far a while,and coming back to it ,to make sure there are no gas fumes around.It won`t be that much gas,just a little.But it is better to be safe.If I can help any more please let me know,and if this was at all helpful,please let them know,thank you.

Posted on Aug 30, 2010

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This is an indication that your thermocouple is defective. Remove the thermocouple and take it to any hardware or home improvement and they will match the length and provide you with a replacement thermocouple. When you reinstall the thermocouple just make sure the flame on the pilot light is hitting the thermocouple. It may not be exactly like yours but it will be similar.

Posted on Aug 30, 2010


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